You can beat polygraph tests by flexing your muscle under the blood pressure cuff but that might be risky as the investigator might pick up on it. Better ways would be to bite your tongue to put a tack in your shoe.
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You can beat polygraph tests by flexing your muscle under the blood pressure cuff but that might be risky as the investigator might pick up on it. Better ways would be to bite your tongue to put a tack in your shoe.